Fill Up Level.....4 extra gallons - Ford Powerstroke Diesel Forum
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Old 03-11-2011, 07:03 AM
Mitch
 

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Fill Up Level.....4 extra gallons

Went to fill the Super Duty on Tuesday evening. Started with about 1/2 tankin the truck. While filling, the pump clicked off at about 13.3 gallons put into the truck. I began to slowly put more fuel in and before I knew it, I had added about 4.5 more gallons, bringing the total to a little over 18 gallons. I had so much in the tank by the time I noticed to stop that the fuel was almost coming out of the filler tube I had to let it idle a bit so I could have some room in the tank to put fuel additive in.

This really makes me want to do the Hutch and Harpoon Mod sooner than later!
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  #2  
Old 03-11-2011, 07:44 AM
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This is what we mean when we all say FILL YOUR TRUCK UP ALL THE WAY. You cannot get an accurate MPG without doing this.
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Old 03-11-2011, 07:52 AM
Mitch
 

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Yep! I now know what it takes and will consistently be done from here on out.
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Old 03-11-2011, 12:08 PM
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It's stupid how much it foams.... i don't think I have ever added less than 2 gallons after it clicks off.... I take my time filling it up for this reason. It takes forever...but you get a more-accurate reading that way.
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Old 03-11-2011, 06:01 PM
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It's well worth it doing the Harpoon mod!!!!

Did mine shortly after I bought the truck and love it!
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Old 03-11-2011, 06:12 PM
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I gotta ask... What's the hutch and harpoon mod?
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Old 03-11-2011, 06:54 PM
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Quote:
Originally Posted by forddieseldoctor View Post
I gotta ask... What's the hutch and harpoon mod?
Agreed. I've seen this mod mentioned before but don't know what it actually involves
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Old 03-11-2011, 07:03 PM
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Quote:
Originally Posted by thebierguy View Post
I had to let it idle a bit so I could have some room in the tank to put fuel additive in.
You don't add it before fueling, so that it mixes in?
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Old 03-11-2011, 07:03 PM
Mitch
 

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Hutch Mod is the modification of the fuel pick up system. From what I have read, the stock pick up system has some flaws that create air in fuel lines and thus creating a cackle in the engine. The harpoon mod is basically just the cutting of two vent pipes which extend into the tank - this prevents the foam from entering into the neck allowing you to fill up the tank full everytime without it clicking off. Guzzle has a good description of each here: Welcome to guzzle's In-tank Hutch Mod Web Page I know this isn't the only description - there are more out there for tips.
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Old 03-11-2011, 07:05 PM
Mitch
 

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Quote:
Originally Posted by cotton View Post
You don't add it before fueling, so that it mixes in?
How do you know how much to put in before you fill up? I figure it mixes up from the sloshing around in the tank as you drive around.
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